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Heat and Mass Transfer

Heat and Mass Transfer
Heat is closely related with

Temperature
Liquids
Entropy
Energy

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Heat and Mass Transfer
Heat transfer takes place as per

Second law of the thermodynamics
Zeroth law of thermodynamics
Kirchoff's law
First law of thermodynamic

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Heat and Mass Transfer
In heat transfer, conductance equals conductivity (kcal/hr/sq.m/°C/cm) divided by

Sq. m (area)
Hr (time)
°C (temperature)
K.cal (heat)

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Heat and Mass Transfer
According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the

Absolute temperature
Fourth power of the absolute temperature
Cube of the absolute temperature
Square of the absolute temperature

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Heat and Mass Transfer
Depending on the radiating properties, a body will be white when(Where a = absorptivity, p = reflectivity, x = transmissivity)

P=1, T = 0 and a = 0
P = 0, x = 1 and a = 0
X = 0, a + p = 1
P = 0, x = 0 and a = 1

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Heat and Mass Transfer
In counter current flow heat exchanger, the logarithmic temperature difference between the fluids is ________ as compared to parallel flow heat exchanger.

Greater
Less
Same
None of these

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MORE MCQ ON Heat and Mass Transfer

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